Just go on through cities, metal gear style, so if soldiers get suspicious, turn to the corner, wait and check if they'll follow you. Once a soldier gets close enough, assassinate him silently. Try to do that across the town.

ask the guards for the quickest way to the C&A HQ.
If they ask why your going to C&A HQ, then say you transporting a prisoner to your personal torture chamber
If ^ doesn't work, get David to say that your an unfinished vitae project, and that he's taking you back to the main facility to finish the project.
If ^ doesn't work, ask Sarah if she can forge a document with orders to take us to HQ, if she can't then do the suggestion below.
If none of the above work, knock them out, don't kill them.

P.S. hows that for planning.

P.P.S. finished reading through whole story yesterday, and its awesome.

NOT a coincidence. Anyway. Battlefield's better than COD and Bioshock is better than Battlefield. The heavy machine gun would probably be something like a Negev if a bren gun was unavailable: http://world.guns.ru/machine/isr/negev-e.html

Well I wouldn't say I'm cured. Alive, but not cured I don't think. I may update today or tomorrow at least once. Don't want to keep you guys waiting after you have been so patient and loyal to the interactive and me. <3

Ummm no offense rovar but why does te dessert eagle have such a BIG (30) clip?????? :)
pleasefix thanks
and continue even longer to the left :D
Edit
oh fu*k sorry i'm so stupid :( nevermind what i said there

We should keep going towards entrance, without worry because if we got in through the past security checkpoints we shouldn't be suspected, but we have to be wary of the next guards though, because we don't know of david's seniority.We might not be able to gain access peaecfully further on